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(No Model.) 2 Sheets-Sheet 2. G. SEEL.

. BUNSBN BURNER. No. 545,917. 5 Patented Sept. 10,1895.

Arena prion.

CARL SEEL, OF BERLIN, GERMANY.

BUNSEN BURNER.

SPECIFICATION forming part of Letters Patent No. 545,917, dated September 10, 1895. Application filed February 6, 1895- serial No. 37, 49- (N0 model-l T0 aZZ whom it may concern: Be it known that I, CARL SEEL, a subjec of the King of Prussia, German Emperor, and a resident of Berlin, in the Kingdom of Prussia, German Empire, have invented an Improved Bunsen Burner, of which the following is an exact specification.

This invention refers to burners in which a mixture of air and gas is used for producing a non-luminous flame of great heat; and my improvement in burners of said kind relate to the combination of the same with a mixing-Wheel arranged between the air and gas tube and the burner proper or directly be low said burner proper, respectively. Said mixing-wheel is provided with wings similar to those of a ventilator, so as to enable the said wheel to be rotated by the buoyancy of the gas or by the pressure of the same, respectively. The purpose of my invention is to obtain a very thorough mixing of the gas and air, and, further, to produce alonger, more cylindrical, and more uniform flame by causing the finished mixture to rotate under the reacting influence of the said mixing-wheel. My improved Bunsen burner may be employed for heating purposes, as well as for lightingpurposes-w'. 6., for the so-called gasglow lightand is, in fact, intended especially for the latter.

In order to make myinvention more clear,

throughout the different views, and in which- Figure 1 is a vertical section through the burner. on line 5 6 of Fig. 1. Fig. 3 is a vertical section through a modification, and Fig. et is a vertical section through another modification.

The air-tube a, which is provided with the perforations a, is fixed to the gas-nozzle b, and carries at its top the casing c. The latter contains centrally a pivot 01, upon which is arranged the mixing-wheel c. This wheel is provided with a number of radial cut-outs e, and on its upper surface with a corresponding number ofinclined Wings e The gas and air, on its way from the tube a to the truncated burner proper f, pushes upon said inclined wings e and causes, thus, the wheel c to rotate upon the pivot d. Owing to the resist- Fig; 2 is a horizontal section takenrotation of the wheel c on the other part, the

gas and air are thoroughly mixed, and this finished mixture will by the reactingintluenee of the wheel e be caused to circulate Within the upper part of the casing c2'. 6., between the wheel 6 and the truncated burnerproperf.

The mixture thereforewill escape out of the numerous perforations of the burnerf, not normal-lyto the outer surface of the burner, but rather tangentially, and the flame will thus become a perfectly cylindrical and uniform one, and will moreover be of a comparatively great length. This is of great importance, especially if the improved burner is used for the so-called gasglow light,? as not only a saving of gas is obtained, but the durability of the incandescence body is greatly increased too.

In order to secure the central vertical rod holding the incandescence body to the aforedescribed burner, I prefer to provide the truncated burner proper fin its flat top portionf with an opening f and I then attach to the lower side of said flat portion f a funnelshaped piecef having at its lower end a small box); The aforementioned supporting-rod (not shown) of the. incandescence body is passed through the openingf into the box f and is thus securely held, as is clear without further explanation. The function of the conef is a double one, in that it not only holds the box f but also deflects the finished mixture of gas and air to the perforated burnerplatef. In order to prevent any decrease in the rotary velocity of the mixture, I prefer to let a part of said cone f rotate together with the mixing-wheel e. I have shown this mode of construction in Fig. 3, in which said. cone has been divided at f in two parts, the small upper part being fixed to the top platef of'the burner, and the large lower part to the central portion of the Wheel e. The box f is in this case elongated and secured directly to the said top platef. Instead of employing a flat mixing-Wheel, as in Figs. 1 and 3, I may use a conical one, and combine the same directly with the movable cone f as shown in Fig. 4., from which the construction is clearly to be comprehended without further explanation.

Having thus fully described the nature of this invention, What I desire to secure by Letters Patent of the United States is 1. In a Bunsen burner, the combination with the tube leading the gas and air to the burner proper, of a mixing wheel arranged below the latter, and adapted to be rotated by the gas and air; said burner proper having in its centeran inverted cone extending downward and adapted to deflect the mixture of gas and air to the other portions of said burner, for the purpose as described.

2. In a Bunsen burner, the combination with the tube leading the gas and air to the burner proper, of a mixing-Wheel arranged below the latter, and adapted to be rotated by the gas and air; said mixing Wheel having in its center an inverted cone extending upward and adapted to deflect the mixture of gas and air to the side-portions of said burner, for the purpose as described.

3. In a Bunsen burner, the combination with the tube leading the gas and air to the burner proper, of a mixing-wheel arranged below the latter, and adapted to be rotated by the gas and air; said mixing-Wheel being formed by a hollow truncated cone secured to an inverted cone adapted to rotate upon a pointed pivot, for thepurpose as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

CARL SEEL.

Witnesses:

WM. HAUPT, CHAs. KREIGER. 

